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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.service.model;
import ai.vespa.http.DomainName;
import com.yahoo.config.model.api.ApplicationInfo;
import com.yahoo.config.model.api.HostInfo;
import com.yahoo.config.model.api.Model;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.Environment;
import com.yahoo.config.provision.RegionName;
import com.yahoo.config.provision.SystemName;
import com.yahoo.config.provision.Zone;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceReference;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.service.duper.DuperModel;
import com.yahoo.vespa.service.monitor.ServiceHostListener;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
/**
* @author hakonhall
*/
public class ServiceHostListenerAdapterTest {
private final Zone zone = new Zone(SystemName.cd, Environment.dev, RegionName.from("us-east-1"));
private final ModelGenerator generator = new ModelGenerator(zone);
private final ServiceHostListener listener = mock(ServiceHostListener.class);
private final ServiceHostListenerAdapter adapter = new ServiceHostListenerAdapter(listener, generator);
private final DuperModel duperModel = new DuperModel();
@Before
public void setUp() {
duperModel.registerListener(adapter);
}
@Test
public void test() {
var applicationId1 = ApplicationId.from("tnt", "app", "default");
var applicationId2 = ApplicationId.from("tnt2", "app2", "default2");
verifyNoMoreInteractions(listener);
activate(applicationId1, "host1", "host2");
verifyActivate(applicationId1, "host1", "host2");
activate(applicationId1, "host1", "host3");
verifyActivate(applicationId1, "host1", "host3");
activate(applicationId1, "host1", "host3");
verifyNoActivate();
activate(applicationId2, "host4");
verifyActivate(applicationId2, "host4");
activate(applicationId1, "host1", "host3");
verifyNoActivate();
removeAndVerify(applicationId1, true);
activate(applicationId1, "host1", "host5");
verifyActivate(applicationId1, "host1", "host5");
}
@Test
public void documentDuplicateHostnameStrangeness() {
var applicationId1 = ApplicationId.from("tnt", "app", "default");
var applicationInfo1 = makeApplicationInfo(applicationId1, "host1", "host2");
duperModel.add(applicationInfo1);
verifyActivate(applicationId1, "host1", "host2");
var applicationId2 = ApplicationId.from("tnt2", "app2", "default2");
var applicationInfo2 = makeApplicationInfo(applicationId2, "host2", "host3");
duperModel.add(applicationInfo2);
verifyActivate(applicationId2, "host2", "host3");
// Duplicate hosts doesn't affect the ServiceHostListener.
duperModel.add(applicationInfo1);
verifyNoMoreInteractions(listener);
duperModel.add(applicationInfo2);
verifyNoMoreInteractions(listener);
// But do affect host lookup in duper model.
assertEquals(Optional.of(applicationInfo1), getDuperModelApplicationInfo("host1"));
assertEquals(Optional.of(applicationInfo2), getDuperModelApplicationInfo("host2")); // <--
assertEquals(Optional.of(applicationInfo2), getDuperModelApplicationInfo("host3"));
}
private Optional<ApplicationInfo> getDuperModelApplicationInfo(String hostname) {
return duperModel.getApplicationInfo(DomainName.of(hostname));
}
private void removeAndVerify(ApplicationId id, boolean listenerInvoked) {
duperModel.remove(id);
if (listenerInvoked) {
ApplicationInstanceReference reference = generator.toApplicationInstanceReference(id);
verify(listener, times(1)).onApplicationRemove(reference);
}
verifyNoMoreInteractions(listener);
}
private void verifyActivate(ApplicationId id, String... hostnames) {
Set<HostName> hostnameSet = Stream.of(hostnames)
.map(HostName::new)
.collect(Collectors.toSet());
ApplicationInstanceReference reference = generator.toApplicationInstanceReference(id);
verify(listener, times(1)).onApplicationActivate(reference, hostnameSet);
verifyNoMoreInteractions(listener);
}
private void verifyNoActivate() {
verifyNoMoreInteractions(listener);
}
private void activate(ApplicationId id, String... hostnames) {
duperModel.add(makeApplicationInfo(id, hostnames));
}
private ApplicationInfo makeApplicationInfo(ApplicationId applicationId, String... hostnames) {
var applicationInfo = mock(ApplicationInfo.class);
when(applicationInfo.getApplicationId()).thenReturn(applicationId);
var model = mock(Model.class);
when(applicationInfo.getModel()).thenReturn(model);
List<HostInfo> hostnameList = Stream.of(hostnames)
.map(hostname -> new HostInfo(hostname, List.of()))
.toList();
when(model.getHosts()).thenReturn(hostnameList);
return applicationInfo;
}
}
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